文章利用矩阵的行向量组和列向量组的极大无关组刻画了矩阵半群中的格林关系。
In this paper, we described the green relations on matrix semigroup through the vector maximal independent subset of matrix.
他的探讨小组已经发觉一组星系群竟以惊人的速度朝向半人马星座和船帆星座之间的那片天空。
His team has found a group of galaxy clusters moving at an extraordinary speed towards a small patch of sky between the constellations of Centaurus and Vela.
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